The African emergence model is supported by
evidence from
a. the fossil record.
b. DNA sequencing data from mitochondria.
c. DNA sequencing data from chromosomes.
d. global climate change patterns.
e. all of these.
Answer: e
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The virulence factor of Yersinia pestis that is a protease that destroys C3b and C5a is
A. Yops. B. pla. C. F1. D. protein A.
The smooth ER is the primary site for the synthesis of phospholipids and cholesterol needed to make ____
a. DNA b. ATP c. ribosomes d. hormones e. cell membranes
When haptens attach to carrier molecules, an epitope forms on hapten which then can be bound to antibody
Indicate whether the statement is true or false
Sometimes, the most practical way to do an experiment is not to perform it in an animal, but to look at cell responses in culture. Cells from mice, humans, and other mammals have been used to establish cell culture lines that have been very important for research. You are studying a novel water-soluble mouse hormone. You know cell culture can be a practical model to reveal protein function, so you apply the hormone to yeast cells, but nothing happens. How could you improve your experiment?
A. Hydrolyze the hormone before application. B. Add ATP as a cofactor. C. Apply the hormone to mouse cell culture. D. Apply the hormone at a concentration of 0.5 M.